Photo-induced Decarboxylative Heck-Type Coupling of Unactivated Aliphatic Acids and Terminal Alkenes in the Absence of Sacrificial Hydrogen Acceptors
作者:Hui Cao、Heming Jiang、Hongyu Feng、Jeric Mun Chung Kwan、Xiaogang Liu、Jie Wu
DOI:10.1021/jacs.8b11218
日期:2018.11.28
boronates are among the most versatile building blocks that can be found in every sector of chemical science. We herein report a noble-metal-free method of accessing such olefins through a photo-induced decarboxylative Heck-type coupling using alkyl carboxylic acids, one of the most ubiquitous building blocks, as the feedstocks. This transformation was achieved in the absence of external oxidants through
1,2-二取代的烯烃,如乙烯基芳烃、乙烯基硅烷和乙烯基硼酸酯,是化学科学各个领域中最通用的结构单元。我们在此报告了一种无贵金属的方法,该方法使用烷基羧酸(最普遍的结构单元之一)作为原料,通过光诱导脱羧 Heck 型偶联获得此类烯烃。这种转变是在没有外部氧化剂的情况下通过有机光氧化还原催化剂和钴肟催化剂的协同组合实现的,H2 和 CO2 作为唯一的副产物。控制实验和 DFT 计算都支持基于自由基的机制,最终导致开发出脂肪族羧酸、丙烯酸酯和乙烯基芳烃的选择性三组分偶联。
Adamantyl- and other polycyclic cage-based conjugates of desferrioxamine B (DFOB) for treating iron-mediated toxicity in cell models of Parkinson’s disease
作者:Thomas J. Telfer、Jeffrey R. Liddell、Clare Duncan、Anthony R. White、Rachel Codd
DOI:10.1016/j.bmcl.2017.03.001
日期:2017.4
facilitate intracellular iron sequestration. The first activity screen showed compounds with methyl-substituted adamantyl (1-3), noradamantyl (5), or 1-pentylbicyclo[2.2.2]octane (17) ancillary groups significantly rescued iron-mediated oxidative stress in confluent PD-relevant SK-N-BE2-M17 neuroblastoma cells (M17 cells) exposed to 1,1'-dimethyl-4,4'-bipyridinium (paraquat, PQ) or H2O2. The second dose-dependence
IMIDAZO(4,5-B) PYRIDIN-2-YL AMIDES AS KV7 CHANNEL ACTIVATORS
申请人:KNOPP BIOSCIENCES LLC
公开号:US20160031875A1
公开(公告)日:2016-02-04
Compounds represented by formula 1 can be potent and/or partially selective for the Kv7.2/7.3 heteromultimer. They may be useful in treating disorders related to seizures, pain, neurotransmitter release, etc.
The present invention provides for compounds of formula (I)
wherein Y
1
, Y
2
, R
1
, R
2
, R
3
, A
1
, A
2
, A
3
, and A
4
, have any of the values defined in the specification, and pharmaceutically acceptable salts thereof, that are useful as agents for the treatment of diseases and conditions, including inflammatory diseases, cancer, and AIDS. Also provided are pharmaceutical compositions comprised of one or more compounds of formula (I).
[EN] DIHYDROPYRIDINONE AND DIHYDROPYRIDAZINONE DERIVATIVES USEFUL AS BROMODOMAIN INHIBITORS<br/>[FR] DÉRIVÉS DE DIHYDROPYRIDINONE ET DE DIHYDROPYRIDAZINONE UTILES COMME INHIBITEURS DE BROMODOMAINES
申请人:ABBVIE INC
公开号:WO2015089075A1
公开(公告)日:2015-06-18
The present invention provides for compounds of formula (I) wherein Y1, Y2, R1, R2, R3, A1, A2, A3, and A4, have any of the values defined in the specification, and pharmaceutically acceptable salts thereof, that are useful as agents for the treatment of diseases and conditions, including inflammatory diseases, cancer, and AIDS. Also provided are pharmaceutical compositions comprised of one or more compounds of formula (I).